Terms: Online Public Education (27,000), online k12 (11,300), k12 online (241,000), k-12 online (410,000), online k-12 (64,800),
Terms: online school (10,700,000), online schools (9,850,000), online school community (34,700),
Terms: virtual public school (62,600), virtual public schools (17,800), interactive video (5,930,000),
Terms: online education (29,900,000), online educators (121,000), online k12 programs (100), k12 online programs (3),
Terms: distance learning (59,900,000), k12 distance learning (184,000), high school distance learning (36,600), distance education (27,700,000), high school courses online (27,500), interstate distance education (20), interstate distance learning (45),
Boolean: site:homeschool.com (6,480), site:homeschool.org (0), site:us +inurl:k12 +"radio astronomy" (467), site:us +"radio jove" (14),
Boolean: title:"high school" +site:org (5,990,000),
Terms: educational standards (2,950,000), state educational standards (90,700), national educational standards (54,900), international educational standards (2,140),
Boolean: site:us +inurl:k12 +"distance learning" (230,000),
Terms: online courses (32,100,000), online classes (12,100,000), online course (19,100,000), online class (4,370,000), online high school courses (160,000), online high school classes (41,500), online elementary school classes (6), online elementary school courses (104), online course guide (14,800),
Boolean: site:us (547,000,000), site:tx.us (3,390,000), site:k12.tx.us (471,000), site:us +inurl:k12 (52,200,000), site:ed.gov (1,460,000), site:education.gov (1), site:us +inurl:k12 +"online classes" (27,700), site:us +inurl:k12 +"online courses" (111,000), site:us +inurl:k12 +"university program" (2,530),
Terms: board of education (39,700,000), department of education (61,100,000), education agency (4,000,000), education department (17,300,000),
Terms: virtual high school (768,000), virtual grade school (46), virtual university (1,850,000), virtual classroom (4,270,000), virtual classrooms (770,000), high school online (472,000), online high school (1,960,000),
Terms: homeschool (31,300,000), homeschooling (27,000,000), home school (27,000,000), home schooling (17,400,000),
Terms: online learning (41,400,000), moodle (51,900,000), k12 voucher (806), k12 vouchers (63),
Terms: education technology (8,560,000),
Terms: continuing education (112,000,000), english as a second language (17,400,000), adult education (37,600,000), community education (21,900,000), teacher training (26,400,000), teacher education (18,800,000), online teacher (1,020,000),
Terms: online professional development (837,000), lesson plans (41,300,000), lesson plan (17,800,000), teaching (749,000,000), teacher (735,000,000), teachers (592,000,000), curriculum guide (2,600,000),